Ahmad ibn Kayghalagh, an Abbasid military officer of Turkic origin, led a raid against the Byzantine Empire, taking at least 4,000 captives. Ahmad ibn Kayghalagh: Ahmad ibn Kayghalagh was an Abbasid military officer of Turkic origin who served as governor in Syria and Egypt. He was ousted as governor of Egypt by Muhammad ibn Tughj in 935. October 22, 906. Wiki link